| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| permittivity of free space constant e0 value | 0.76 | 0.4 | 7744 | 39 | 44 |
| permittivity | 1.62 | 0.3 | 2955 | 92 | 12 |
| of | 1.24 | 0.4 | 2413 | 18 | 2 |
| free | 0.27 | 0.8 | 827 | 67 | 4 |
| space | 1.67 | 0.4 | 4475 | 87 | 5 |
| constant | 1.68 | 0.4 | 6979 | 40 | 8 |
| e0 | 1.73 | 0.2 | 7601 | 5 | 2 |
| value | 0.38 | 0.4 | 549 | 6 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| permittivity of free space constant e0 value | 0.45 | 0.6 | 5116 | 9 |
| constant of permittivity of free space | 0.85 | 0.7 | 9427 | 97 |
| the value of permittivity of free space | 1.35 | 0.1 | 8800 | 9 |
| permittivity of free space exact value | 1.79 | 0.8 | 851 | 26 |
| unit of permittivity of free space e0 | 1.01 | 0.4 | 5805 | 53 |
| electric permittivity of free space value | 0.15 | 0.1 | 1378 | 86 |
| permittivity of space constant | 0.29 | 1 | 9995 | 68 |
| permittivity of free space equation | 1.79 | 0.4 | 7670 | 53 |
| permittivity of free space f/cm | 1.52 | 0.2 | 3868 | 91 |
| permittivity of free space constant value | 1.43 | 0.1 | 9164 | 63 |
| permittivity of free space constant number | 0.6 | 0.2 | 8324 | 31 |
| permittivity of free space constant e0 | 1.24 | 0.3 | 2588 | 17 |
